Authors:

Su-Mi Hur(UC Santa Barbara)

Glenn Fredrickson(UC Santa Barbara)

August BosseEdward Kramer(UC Santa Barbara)

Carlos Garcia-Cervera(UC Santa Barbara)

We present self-consistent field theory (SCFT) simulations of block
copolymers confined in a square well in order to guide self-assembly towards
defect-free in-plane arrays. In particular, tetragonal (square) packing,
which is thought to be crucial to developing novel information storage and
electronic devices, has been observed in simulations of thin films of AB
diblock copolymers with suitable A homopolymer additives confined in square
wells. While the A-B + A system only supports square lattices of limited
sizes (up to 4x4), we were able to produce large-area defect-free square
lattices using blends of chemically different diblock copolymers with
suitable attractive interactions between blocks. Our simulations demonstrate
that order originates at the walls and then permeates throughout the system.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.MAR.C1.79